INTERNATIONAL TELECOMMUNICATION UNION

ITU-R P.684-6

(2012/02)

kHz 150

P

ITU-R P.684-6

ii

(IPR)

1

(ITU-T/ITU-R/ISO/IEC)

ITU-R 1

http ://itu.int/publ/R-REC/en

2015 ITU 2015

BO BR BS BT

F M P RA RS S SA SF SM SNG TF V

ITU-R 1

(ITU)

1

ITU-R P.684-6

ITU-R P.684-6

kHz 150

ITU-R 225/3 (2012-2009-2005-2003-2001-1994-1990)

kHz 150

ITU-R P.1147

kHz 60 kHz 1 000 kHz 16

kHz 60

kHz 1 700 150

2 (VLF)

LF VLF ELF kHz 150

f cos i ITU-R P.1147

km 1000

(HF) (LF)

1

1

kHz 150 1.1

km 1 000

ITU-R P.684-6

(VLF)

km 1000

(VLF)

km 1 000 kHz 10

2 2.1

-

3.1

2 1.2

/2 ig

Rc Tc

h + a = r

1

a = r

R< /2

R> T>

ig

T>

3

ITU-R P.684-6

1

T T c

T

i g R

r = a + h r = a

R c R

0684-01

2.2

(1)

Vu 300 pt

V

(kW)

pt

(2)

Et

Vu L

cos

||R||

D

Ft

mV/m

(km)

L

||R|| D

Ft

(3)

Es

2Vu L

cos

||R||

D

Ft

Fr

mV/m

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download